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NEAR FIELD GROUND MOTION CHARACTERISTICS AND EFFECTS

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Page 1: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

NEAR FIELD GROUND MOTION

CHARACTERISTICS AND EFFECTS

Page 2: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 3: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 4: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 5: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 6: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 7: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 8: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

RELATIONSHIP BETWEEN SITE AZIMUTH AND DIRECTIVITY

Page 9: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

SPECTRAL AMPLIFICATION WITH DIRECTIVITY

Page 10: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

PULSE SIMULATION

Page 11: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

PULSE SIMULATION

Page 12: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

AMPLITUDE AND PERIOD AMPLIFICATION WITH MAGNITUDE

Page 13: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

PERIOD AMPLIFICATION WITH MAGNITUDE

Page 14: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Period-magnitude relationship

Page 15: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

AMPLITUDE ATTENUATION

Page 16: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

NUMBER OF CYCLES

Page 17: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

EFFECT OF CYCLE NUMBER

Page 18: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

VELOCITY PULSE PERIOD

Page 19: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

PREDOMINANT SPECTRAL VELOCITY AND PULSE PERIOD

Page 20: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

TABAS , Iran 1978, Mw=7.1

Page 21: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

BELL SHAPED AMPLIFICATION AROUND Tp

Page 22: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

BELL SHAPED AMPLIFICATION AROUND Tp

Page 23: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

BELL SHAPED AMPLIFICATION AND DISPLACEMENT SPECTRA

Page 24: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 25: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 26: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 27: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 28: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 29: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

INELASTIC VERSUS ELASTIC DISPLACEMENT

Page 30: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

Page 31: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

INELASTIC VERSUS ELASTIC DISPLACEMENT qy=Rs

Page 32: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

INELASTIC VERSUS ELASTIC DISPLACEMENT

Page 33: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

INELASTIC VERSUS ELASTIC DISPLACEMENT

Page 34: NEAR FIELD GROUND MOTION - NTUAlee.civil.ntua.gr/pdf/mathimata/eidika_themata_texnikis/simeioseis/... · —4.3 sec Time [sec] 100 60 40 0.0 2.0 3.0 Imperial valley 1979 (E03-230)

ATHENS 1999 EARTHQUAKE

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